Jim McMahon broke his silence between mini-camp workouts and predicted the Chicago Bears' offense this year will be less predictable.

McMahon said running back Walter Payton's retirement will put no added offensive pressure on himself and, if anything, "will make us less predictable."Coach Mike Ditka has said he will leave much of the play calling to quarterback coach Greg Landry which could lead to McMahon calling more audibles and plays.

"Getting Greg involved will help us quite a bit," McMahon said Thursday. "He was a great quarterback in this league for a lot of years. We'll have more options and more nickel situations. We should score a lot more points this year"

McMahon, having lost none of his sense of humor, was asked what he thought of Ditka's new, low-keyed approach.

"It's early," said McMahon.

But he was still angry over reports earlier in the week that he had failed his physical examination because of a slightly dislocated left shoulder suffered in last season's 21-17 playoff loss to Washington.

"You guys are making up stories already," said McMahon. "It surprised me when I saw it on TV."

McMahon quickly disproved the reports by going full-time in both workouts Wednesday and repeating Thursday.

He said he does have a partial dislocation of his none-throwing left shoulder.

"It's not totally healthy," said McMahon. "If I get hit and it comes out anymore, they'll have to fix it."

If they do, it will be just another in a long line of fixings for McMahon, who has yet to play a full season without being plagued by injuries.

"My goal is to play every game, that's the main goal," said McMahon, whose injuries have included a lacerted kidney, broken hand, bruised back, torn rotator and pulled hamstrings.

Selected by the Bears as their No. 1 choice out of Brigham Young in the 1982 draft, the last time McMahon had an injury-free season was in his junior year in college.

He ranks among the top quarterbacks in the National Football League when he is physically sound. In addition to leading the Bears to the Super Bowl championship during the 1985 season, McMahon had a string of 25 winning starts broken in a loss to at Denver last year.

He started and won the next three games before pulling a hamstring in the Minnesota game which forced him to miss the last three regular season games.

McMahon had some minor surgery in his right shoulder this winter and said "It feels pretty good. They cut out some bone to make room for more rotation."

McMahon could receive better protection this year with what figures to be a healthier Bear offensive line.

Center Jay Hilgenberg, tackles Jim Covert and Keith Van Horne and guard Tom Thayer all underwent surgery for various injuries this past winter and have been pronounced fit.

All reported and participated in the three-day mini-camp which ends with a double workout Friday.

Meanwhile, the Bears on Thursday announced the signing of three players, including linebacker Jim Morrissey.

Morrissey was among the unsigned veterans who attended mini-camp without a contract.

Also signed were free agents Richard Ehmke, a kicker from Eastern Illinois, and Darrin Woody, a safety from Virginia Union.